<html>
    <head>
      <base href="https://bugs.llvm.org/">
    </head>
    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - mingw-w64: std::wcout after _setmode(_fileno(stdout), _O_WTEXT) doesn't work"
   href="https://bugs.llvm.org/show_bug.cgi?id=47302">47302</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>mingw-w64: std::wcout after _setmode(_fileno(stdout), _O_WTEXT) doesn't work
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>libc++
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>10.0
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>PC
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>Windows NT
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>normal
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>P
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>All Bugs
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>unassignedclangbugs@nondot.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>nguyen.long.908132@gmail.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>llvm-bugs@lists.llvm.org, mclow.lists@gmail.com
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Take this code snippet:
#include <iostream>
#include <io.h>
#include <fcntl.h>

int wmain(int argc, const wchar_t* argv[])
{
    _setmode(_fileno(stdout), _O_WTEXT);
    std::wcout << L"Thử nghiệm\n";
    return 0;
}

On MS STL, this correctly outputs the string, but on libc++ it outputs nothing.

Additional notes:
Add -municode when compiling with clang, and add /utf-8 when compiling with
MSVC</pre>
        </div>
      </p>


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